ZrO_2纳米粒子对PI膜气体渗透性能的影响  

Effect of ZrO_2 Nanoparticles on Gas Permeability of Polyimide Membrane

作　　者：张鹏军 丁保宏 夏裴文 王强[1] 臧树良[2] 邓桂春[2] Zhang Pengjun;Ding Baohong;Xia Peiwen;Wang Qiang;Zang Shuliang;Deng Guichun(Ministry of chemical and Environmental Sciences,liaoning shihua university,Fushun 113001,China;Quanzhou Institute of Technology,Jinjiang 362269,China)

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001 [2]泉州理工职业学院,福建晋江362269

出　　处：《工程塑料应用》2018年第10期132-136,共5页Engineering Plastics Application

基　　金："福建省清洁能源应用技术协同创新中心"福建省教育厅项目[2016-71]

摘　　要：采用溶胶凝胶法合成了纳米型ZrO_2粒子,按一定比例往均苯四甲酸二酐–4,4′–二氨基二苯醚(PMDA–ODA)型PI酸中添加二氧化锆纳米粒子制备出一系列不同物质的量比(PI酸∶ZrO_2)的PI–ZrO_2杂化膜。采用红外、热分析、场发射扫描电镜和全自动物理吸附仪对其进行表征,并使用纯CH_4,CO_2和N_2在自制气体渗透性检测装置上检测杂化膜的气体渗透性能。结果发现ZrO_2粒子均匀填充在PI内部形成有机–无机网状结构,具有良好的热稳定性和气体渗透性能。当PI酸和纳米ZrO_2粒子的物质的量比为5∶1时,PI杂化膜具有较高的气体选择性,CO_2,CH_4,N_2气体的渗透性系数分别为69.44,4.33,13.64 10–5 L/(m^2·s·Pa),CO_2/CH_4的分离因子为16.04。相比于传统的PMDA–ODA型PI分离膜,CO_2,CH_4,N_2的渗透性系数增长为原来的2.6,8.0,30.0倍。Nano ZrO2 particles were synthesized by sol-gel method.A series of PI-ZrO2 hybrid membrane with different molar ratios(PI acid∶ZrO2)were prepared by adding ZrO2 nanoparticles to PMDA–ODA-type polyimide acid.It was characterized by infrared,thermal analysis,field emission scanning electron microscopy and fully automatic physical adsorption instrument,and the gas permeation performance of the hybrid membrane was detected by pure CH4,CO2 and N2 on the self-made gas permeability detecting device.The results show that ZrO2 particles are uniformly filled in the polyimide to form an organic-inorganic network structure,which has good thermal stability and gas permeability.When the molar ratio of polyimide acid to nano-zirconia particles is 5∶1,the polyimide hybrid membrane has high gas selectivity,and the permeability coefficients of CO2,CH4 and N2 gases are 69.44,4.33,13.64 10–5 L/(m2·s·Pa)respectively,and the separation factor of CO2/CH4 is 16.04.Compared with the conventional PMDA– ODA type polyimide separation membrane,the permeability coefficients of CO2,CH4,N2 are increased by 2.6,8.0 and 30.0 times.

关 键 词：二氧化锆 纳米粒子 气体渗透性能 网状结构 杂化膜 

分 类 号：O063[理学]